TCO, or Total Cost of Ownership, is a metric that helps to estimate the total cost of acquiring and maintaining a product, service, or investment over its lifetime. TCO includes not only the initial purchase price, but also any ongoing costs, such as maintenance, support, upgrades, licensing, or disposal. TCO is useful for comparing different options and making informed decisions based on the long-term implications of each option. In this case, the company needs to do a cost analysis for a three-year contract renewal with a SaaS provider that changed its licensing model. To do this, the company needs to consider the TCO of the SaaS service, which includes the cost of the license, the cost of any additional features or services, the cost of integration with other systems, the cost of training and support, and the cost of any potential risks or issues. By calculating the TCO, the company can forecast the entire financial impact of the contract renewal over the three-year period and compare it with other alternatives. ROI, or Return on Investment, is a metric that measures the performance or profitability of an investment. ROI compares the amount of money invested in a project or asset with the amount of money gained or saved as a result of that investment. ROI is useful for evaluating the effectiveness and efficiency of an investment and determining if it is worth pursuing. However, ROI does not account for the total cost of ownership of an investment, nor does it consider the time value of money or the opportunity cost of investing in something else. Therefore, ROI is not the best metric to use for forecasting the entire financial impact of a contract renewal over a long period of time. SOW, or Statement of Work, is a document that defines the scope, deliverables, timeline, and terms of a project or contract. SOW is useful for establishing the expectations and responsibilities of both parties involved in a project or contract and ensuring that they are aligned and agreed upon. However, SOW does not provide a financial forecast or analysis of a project orcontract, nor does it compare different options or alternatives. Therefore, SOW is not the best metric to use for doing a cost analysis for a contract renewal. RFI, or Request for Information, is a document that solicits information from potential vendors or suppliers about their products, services, or capabilities. RFI is useful for gathering information and data that can help to evaluate and compare different options or alternatives and make informed decisions. However, RFI does not provide a financial forecast or analysis of a project or contract, nor does it calculate the total cost of ownership or the return on investment of each option or alternative. Therefore, RFI is not the best metric to use for doing a cost analysis for a contract renewal. References: 1, 2, 3